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Effects of speech output on maintenance of requesting and frequency of vocalizations in three children with developmental disabilities

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Sigafoos, J and Didden, R and O'Reilly, M (2003) Effects of speech output on maintenance of requesting and frequency of vocalizations in three children with developmental disabilities. Augmentative and Alternative Communication, 19 (1). pp. 37-47. ISSN 0743-4618

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Abstract

We evaluated the role of digitized speech output on the maintenance of requesting and
frequency of vocalizations in three children with developmental disabilities. The children
were taught to request access to preferred objects using an augmentative communication
speech-generating device (SGD). Following acquisition, rates of requesting and vocalizations
were compared across two conditions (speech output on versus speech output off) that were
alternated on a session-by-session basis. There were no major or consistent differences across
the two conditions for the three children, suggesting that access to preferred objects was the
critical variable maintaining use of the SGDs. The results also suggest that feedback in the
form of digitized speech from the SGD did not inhibit vocalizations. One child began to
speak single words during the latter part of the study, suggesting that in some cases AAC
intervention involving SGDs may facilitate speech.

Item Type: Article
Keywords: Augmentative and alternative communication; Aided communication modes; Speech generating devices; Requesting; Vocalization; Autism; Developmental disability
Journal or Publication Title: Augmentative and Alternative Communication
Page Range: pp. 37-47
ISSN: 0743-4618
Identification Number - DOI: 10.1080/0743461032000056487
Additional Information:

The definitive version is available online at http://www.tandf.co.uk/journals/titles/07434618.asp

Date Deposited: 23 Aug 2007
Last Modified: 18 Nov 2014 03:21
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